Re: Adding Column on Huge Table

Moin Akther wrote:
> We want to add a column on table size of 1.5TB, we have to perform this activity with minimal downtime. 
> 
> What are the best practises to add a column on huge table ?
> 
> How much time alter statement will take to add column ?
> 
> Any alternate solution other than alter statement to add column ?
> 
> Will adding a new column on a huge table generate huge WAL files ?

As a quick experiment would have told you, adding a column without a DEFAULT
clause is very fast.  Since v11, it is fast even if the new column has a
DEFAULT clause.

Yours,
Laurenz Albe
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